Scamp, rogue (6)
I believe the answer is:
rascal
I believe this is a double definition.
'scamp' is the first definition.
(I know that scamp can be written as rascal)
'rogue' is the second definition.
(I know that rogue can be written as rascal)
(Other definitions for rascal that I've seen before include "Impudent person" , "Scoundrel or mischievous child" , "Pickle" , "Horror" , "A mischievous and maybe dishonest person" .)